Staybolt structure



E. I. DODDS.

STAYBOLT STRUCTURE.

APPLICATION FILEU OCT-31,1919.

1,373,057. Patented Mar. 29, 1921.

A 3 Nam? 73 jg/Z i g 1 k zit! l W i 1' 1,

JNVENTOR Jim W UNITED STATES PATENT OFFICE.

ETHAN I. IDODDS, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR T FLANNERY BOLT COMPANY, Oll PITTSBURGH, PENNSYLVANIA.

STAYBOLT STRUCTURE.

Application filed October 31, 1919.

To all whom it may concern: lie it known that I, ETHAN I. Donns, citizcn oi? the United States, and a resident olf lfittsburgh, in the county of Allegheny and State of Pennsylvania, have invented iertaiii new and useful Improvements 111 y'aoit Structures; and I do hereby declare the following to be a full, clear, and exact description or the invention, such as will enable others skilled in the art to which it up pertains to make and use the same.

This invention relates to improvements in stay'bolt strueturcs,=one object of the in vention being to provide a housing for the l ead of the bolt and in which said head has its hearing, which housing shall. be welded i l :o the boiler sheet so that the weld shall not in exposed. I

it. further object is to so weld a housmg for a bolt head, to the boiler sheet that the weld may be utilized in providing a seat for the bolt head within said housing.

1th these and other objects in view, the iuientiouconsists in certain novel features oi iensi'ructien and combinations and or rangeiuents oi? parts as hereinafter set forth and pointed out in the claims.

in the accompanying drawlngs; Figure l is a view illustrating the manner of weld ing the housing to the boiler sheet; Fig. 2 is a sectional view showing the parts assembled, and Fig. 3 is a view of a modification.

1 represents an outer boiler sheet having a bolt opening 25, and 3 illustrates a staybolt which passes through provided with a head rounded contour.

housing located against the boiler sheet around the opening 2 and spaced from the latter. portion 6 of the interior of said housing may be made plain and another 1Oi'tht11 may be threaded as at 7 to receive the i-iorly threaded portion of a plug or r1; t5.,---the latter being made with an angular part 9 to receive a wrench.

'lhe housing is united integrally to the boiler sheet by a weld it) which is built up, in the manner shown in Fig. l, between the interior portion G of the housing and the opening 2 in the boiler, the alloy composing said weld cohering to the metal of the boiler sheet and the metal of the housing within the latter. After the Weld 10 shall have been built-up as shown in Fig. 1, it will be ll; which may have a Specification of Letters Patent.

said opening and is Patented Mar. 29, 1921. Serial No. 334,780.

formed or machined with the use of a suitable tool to provide a curved or rounded seat 11 for the head of the staybolt. The outer end of the weld may be formed to provide an abutment 12 for the inner end of the closure 8 and between the latter and said abutment, a gasket 13 may be interposed.

Instead oi shaping the weld to provide an abutment for the closure, the housing may be formed with an annular shoulder or abutment 14 for the closure, and the weld 15 disposed between this shouldered portion of the housing and the opening 2, as shown in Fi g. 3, thus minimizing the amount of Welding alloy necessary to unite the housing to the boiler sheet and still provide a seat 16 for the head of the staybolt.

Having fully described my invention what I claim as new and desire to secure by Let tors-Patent, is

1. The combination with a boiler sheet having an opening, and a staybolt having a head, of a housing for said head, and a weld extending upwardly within said housing and uniting the latter to the boiler sheet.

2. The combination with a boiler sheet having a opening, and a staybolt having a head, of a housing for the bolt head, and a weld within said housing ant uniting the latter to the boiler sheet, said weld providing a seat for the bolt head.

3. The combination with a boiler sheet having an opening and a staybolt having a head, of a housing surrounding said opening and spaced therefrom, a weld between the interior wall of the housing and the opening in the boiler sheet and uniting said housing to the boiler sheet, a portion of said weld providing a seat for the head of the stayholt, a closure entering said housing and there being an abutment within the lions ing formed at the free end 01 said weld for said closure.

41. The combination with a boiler sheet having an opening, and a staybolt having a head, of a housing on the boiler sheet, a closure entering said housing, a weld within the housing and uniting the same to the boiler sheet, said weld providing a seat for the bolt head and an abutment forsaid closure.

In testimony whereof, I have signed this specification. 

